Actually the Clark T39 is better than their T19, different curvature so less unwanted distortion. I’ve only used the Ofrei service style T39, I prefer the look on my 1665.
There’s a lot of rehaut distortion with the Clark T19 crystal. Here’s a side by side of the same watch - Clark vs CWP.
Cheaper is the Ofrei PA 462 66. It has a lower profile but is very close to a T19 service crystal.
Here’s a 1970 gen for comparison, also has the uneven spike: Btw. Had a chat with MK from HR and pointed out the current lume deficits. Hopefully the next batch will be improved. Don’t hold your breath though! Modded HR dial cased-up:
Yeap, very good dial print. Lume is all wrong though. However with a bit of work you can get acceptable results. Modded: As delivered: You will need to email and request the 5513 dial. It’s not listed on their website.
You covered it very well. Helenarou, Yuki and JK Horological (pretty much identical to Clark, but much cheaper) offer sets too. Sometimes it pays to mix and match. Hands can also vary from batch to batch. Here was a comparison, some broken links to images unfortunately: https://rwg.cc/topic/179042-ultimate-rolex-mercedes-hands-comparison/ Here's my 5513 with a Clark handset and Helenarou dial.